89331821 has 8 divisors (see below), whose sum is σ = 95727744. Its totient is φ = 83062720.

The previous prime is 89331799. The next prime is 89331829. The reversal of 89331821 is 12813398.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89331821 - 2¹⁰ = 89330797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89331829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30245 + ... + 33066.

It is an arithmetic number, because the mean of its divisors is an integer number (11965968).

Almost surely, 2^89331821 is an apocalyptic number.

It is an amenable number.

89331821 is a deficient number, since it is larger than the sum of its proper divisors (6395923).

89331821 is a wasteful number, since it uses less digits than its factorization.

89331821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63411.

The product of its digits is 10368, while the sum is 35.

The square root of 89331821 is about 9451.5512483401. The cubic root of 89331821 is about 447.0286888917.

The spelling of 89331821 in words is "eighty-nine million, three hundred thirty-one thousand, eight hundred twenty-one".